Mark was a student at this university from 1999 to 2003, ____ , he studied very hard and was made Chairman of the Students' Union.
| A．during which time | B．for which time |
| C．during whose time | D．by that time |
.
. __________ the fact that it was raining, she still went out hurriedly.
| A．Though | B．However | C．Although | D．Despite |
.
At last, we found ourselves in a pleasant park with trees providing shade and __________down to eat our picnic lunch.
| A．sitting | B．having sat | C．to sit | D．sat |
.
. ---How did your students express their thanks to you on Teachers’ Day?
---A gift together with many flowers _______ sent to me .
| A．was | B．am | C．have been | D．had been |
.
Science and engineering students often _____ their heads in books instead of going to dances and cinema.
| A．bury | B．hide | C．devote | D．cover |
.
The storm died away at last with the golden waves ______ the shore in peace.
| A．striking | B．hitting | C．knocking | D．beating |